Comment Re:From the pdf... (Score 2) 201
You're right.
"Thrust was observed on both test articles, even though one of the test articles was designed with the expectation that it would not produce thrust. Specifically, one test article contained internal physical modifications that were designed to produce thrust, while the other did not (with the latter being referred to as the "null" test article)."
Also: "within a stainless steel vacuum chamber with the door closed but at ambient atmospheric pressure"
I think maybe they made one of these:
https://ancillary-proxy.atarimworker.io?url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3F...